Pneumatic cushion for vehicle-springs.



, f N0. 838,106. v v Y BATENTED DEU. l1, 1906.

' C. S. G URNEY.

PNEUMATIC CUSHION FOR VEHICLE SPRINGS, ArrLIoAnox FILED Dno. 1a, nos.

S11/Luo: 1 For,

Q/@i/{meowa G2077@ y A UNITEDjsTATEs PATENT oEEroE.:

PNEuMATlo cusHloN'Fon vial-lloLE-SPRINGS.`

l no. esame.

To /ZZ. tuhom it may concern:

.13e itknown that- I,"CALEB S. GUENEY, a cltizen of the United.' States, residin at Portsmouth, in the county of Rocking am and State of New Hampshlre, have invented' certain .new and useul Im rovements in Pneumatic for Vehic e-Springs and 'I do declare the following to be a full', clear, and exact description of the invention, such I a simple, durable, inexpensive, 'and eflicient pneumatic cushlonof this character which Fmem sectional `,of sai spring,

llower member 3 upper 0 as wilhenable others skilled in the art to 'which 1,t appertains'. to make and use the same.'

vMy invention relates tei-improvements in pneumaticcushion devices for the springs oi vehicles and the like. `i On'e object of the 'invention is to provide ma 'be readily mounted u on either side of or etween the two oppositelybowed membersof a vehicle-spring or in any suitable manner upon sprin s of any description, so as to ease the violent )olts of a vehicle in passing over uneven 'fare perspective views of the 'two 'telescoping members of the cushion.

Referring to the drawings by characters, 1 denotes my improved neumatic cushion, which ma be mounted etween the two o owed members s of a vehic eor upon either the outer or inner side or in any suitable manner upon a spring of an description. The cushioning device comprises two closely-fitting telescoping cylindrical members 2 3. The inner and has a closed bottom and an en end 4', adjacent to which may be on the exterior ofthe cylinder an sprin S,

provide annular band of packing 5 to cause the member B to t more snugly, if necessary, within I- ladacent to its The saidmember 3 1s formed lower end with a longitudina ly-eXtending slot or oplcningl 6, .which forms a restrictedpassage t oug whlch air the member 2'.

- Specication of Letters Patent.

ippiaaaon mea member 18,1905. sesam. 292.315.

Patented nec, i1, 1996.-'

enters and escapes as the two members QI' the device are .moved toward and from 'each l other. One or more of the slots may be employed, and they -may be of any size ,accordlng` to the size of the cushion andthe use to which it is. to be put. The outer and upper member 2 has an o'pen lower end 7, into which the open upper end '4 of the member 3 telescopes, and a closed` top, which is here shown in the form of a removable screw cap or head 8, but which'may be of any other form. U' on the lower end 7 ofthe member 2 is provi ed a protecting-hood 9, adapted to' surround the lower' portion of the member 3 This hood 9is in the form of a 'sleeve of slightly-greater di'ameter than that of the member 3, so that an annular space 10 is formed between the interior of the hood and the exterior of the lower member 3, as clearly shown in Fig. 2 of the drawin s. The hood e and to protect the same from dust and dirt.

9 may be screw-threaded or ot erwise rigidly secured upon the lower end of the member 2, orv it may beV slidably mounted thereon, as. shown, or in'any other suitable manner. As shown, it is sup orted thereon by having the inwardly-exten ing annular flange 11 at its upperI en d engage a similar outwardly-ex tending' annular iiange 12, formed or provided upon the lower end 7 of the member 2. As the member'2 slides over the member 3 the slot or opening-6 will be o ened or closed to a vgreater or less extent, an the passage oiair intoand out of the cylindrical members will vary to produce an automatic cushioning action. lt will be seen 'that when the two members are forced together quickly the air within-them will be compressed to form a cushion, and it can only esca' e gradually through the slot or opening 6. he cushioningdevice is loosely mounted, referably, by means of ball-and-socket joints between the two members s voi' a vehicle-springer upon either the outer or inner sideof the same, as previously stated. These 7ball-and-socket-joint connections are clearly shown in Fig.' 2 ofthe drawingsand eac comprise a ball member 13 and a socket member 14. The`- ball member -may be clamped', bolted, or otherwise secured, as at 16, or in the most convenient place between or adj acent to the members s of the spring, -and it IOO hasfat one of itsends a ball 15, which isl ada ted to move freel in a socket 17, formed in t e member. 14. he latter, as shown, 1s formed of two parts adapted to be bolted or IIO otherwise secured together and to the closed end o'f one of the members 2 3. These balland-socket-joint connections are the same at both ends of the cushion and permit the body of the vehicle, which is supported by the springs, to sway laterally Without interfering with the sliding or telescoping movement of the two members 2 3Jl It will be noted that the lateral play of the axle and body will not in any way interfere with the operar tion of the cushion, owing to the provision of these lball-and-socket connections.

From the foregoing description, taken in connection with the accompanying drawings,

the operation and advantages of the invention will be readily understood Without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction maybe resorted to without departing from the principle or sacrificing any oi the advantages of this invention.

Having thus' described mylinvention, what I claim as new, and desire to secure by Letters Patent, is

1. A pneumatic cushion-for springs,v com- .per and lower members ses, 10e

ber having its inne'i' end open and provided near its outer end with openings which ooact lwith the outer end' of the outer member to regulate the admission and escape of air.

2.V In combination with a spring having upper and lower members, a pneumatic cushion comprising two tubular telescoping members, each closed at its outer end, theinner member having its inner end open 'and provided near its outer end with openings which coact with the outer end of the outer member to regulate the admission and escape of air, said cushion being ldisposed between the upof the spring, and ball-and-socket-joint connections between the members of the spring and those of the cushion.

In testimony' whereof I have hereunto set my hand in presence of two subscribing'witnesses.

CALEB S.. GURNEY.

-Witnesses RALPH C. Born,

CALVIN PAGE. 

